228116855 has 4 divisors (see below), whose sum is σ = 273740232. Its totient is φ = 182493480.

The previous prime is 228116821. The next prime is 228116909. The reversal of 228116855 is 558611822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 558611822 = 2 ⋅279305911.

It is not a de Polignac number, because 228116855 - 2¹⁴ = 228100471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22811681 + ... + 22811690.

It is an arithmetic number, because the mean of its divisors is an integer number (68435058).

Almost surely, 2^228116855 is an apocalyptic number.

228116855 is a deficient number, since it is larger than the sum of its proper divisors (45623377).

228116855 is an equidigital number, since it uses as much as digits as its factorization.

228116855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45623376.

The product of its digits is 38400, while the sum is 38.

The square root of 228116855 is about 15103.5378305879. The cubic root of 228116855 is about 611.0158251129.

The spelling of 228116855 in words is "two hundred twenty-eight million, one hundred sixteen thousand, eight hundred fifty-five".